Dual cartridge lubricator



FIG. 1 is an oblique view of the dual cartridge lubricator;

FIG. 2 is a front elevational view of the dual cartridge lubricator of FIG. 1;

FIG. 3 is a rear elevational view of the dual cartridge lubricator of FIG. 1;

FIG. 4 is a left side elevational view of the dual cartridge lubricator of FIG. 1;

FIG. 5 is a right side elvational view of the dual cartridge lubricator of FIG. 1;

FIG. 6 is a top view of the dual cartridge lubricator of FIG. 1; and,

FIG. 7 is a bottom view of the dual cartridge lubricator of FIG. 1.

The broken line showing is for illustrative purposes and forms no part of the claimed design. 

The ornamental design for a dual cartridge lubricator device, as shown and described. 